IAG Performance V3 Street Series Air / Oil Separator (AOS) for 2006-07 Subaru Impreza WRX & 2004-07 STI. 2006-subaru-legacy-gt spec b Included with this 2013+ BRZ

Included with this 2013+ BRZ / FR-S / GT86 coolant overflow tank is a sight glass for easy checking of coolant levels

The IAG AOS conversion kit for the 2015-20 Subaru WRX FA20 DIT engine is designed to switch the upper breather portion of the Street Series AOS to the Competition Series AOS

To eliminate this problem each head is tapped and threaded plugs are installed

The IAG RockBlocker Reverse Light Overlay Film Kit is made from high impact resistant film with an adhesive backing

Exhaust Valve Diameter: 33

IAG Performance V3 Street Series Air / Oil Separator (AOS) for 2006-07 Subaru Impreza WRX & 2004-07 STI. 2006-subaru-legacy-gt spec b Included with this 2013+ BRZIAG V3 Street Series AOS (Red) The IAG Performance V3 Street Series Air Oil separator (AOS) is an excellent investment to keep your Subaru vehicle running well. The Street Series AOS maintains OEM PCV system functionality, but supplements its capacity. The Street Series AOS design is based on years of extensive testing on standard and competition applications. The Street Series AOS' large, 1 liter, cast aluminum swirl pot canister more effectively